Pin clamp



FIG. 1 is a front, top, right side perspective view of a pin clamp for support table in accordance with the present invention;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof.

The broken lines in the figures show portions of the pin clamp that form no part of the claimed design. 

CLAIM The ornamental design for a pin clamp, as shown and described. 